mcpbeat Sign in

WHOIS MCP Server

by kincaidyang Your server? Claim it
answering

WHOIS is answering right now. Last checked 16 min ago. It exposes 2 tools. Last commit 16 Sep 2026.

Query WHOIS/RDAP information for domains, IP addresses, CIDR prefixes and ASNs. Self-hostable.

Uptime history 47 days of history · worst day 81%
47 days agonow
100.0%
Uptime 24h
91 of 91 checks
2
Tools
read from the server
4619 ms
Response time
average over 24h
64
Stars
last commit 16 Sep 2026

What changed 1

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 22 August 2026. No other catalogue keeps this.

22 Aug a tool changed version

WHOIS missed 2 checks this week

Everything else answered, so this is steady rather than shaky. We check every 15 minutes, which is how a one-off gets told apart from the start of a pattern, and how you hear about the next one within the hour instead of from your users.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 16 min ago.

run in your terminal
claude mcp add whois --transport http https://whois.ddnsip.cn/mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "whois": {
      "url": "https://whois.ddnsip.cn/mcp"
    }
  }
}
~/.codex/config.toml
[mcp_servers.whois]
url = "https://whois.ddnsip.cn/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "whois": {
      "url": "https://whois.ddnsip.cn/mcp"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "whois": {
      "url": "https://whois.ddnsip.cn/mcp"
    }
  }
}

Available tools 2

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

whois
whois_batch_lookup
Query WHOIS/RDAP information for multiple domain names, IP addresses/CIDR prefixes, or ASNs in one call. Results are returned per query with individual statuses. Disabled unless the operator enables batch queries.
whois_lookup
Query WHOIS/RDAP information for a domain name, IP address or CIDR prefix (v4 or v6), or ASN

Endpoints

URLTransportStateLatencyChecked
https://whois.ddnsip.cn/mcp streamable-http answering 2588 ms 16 min ago

Alternatives to WHOIS

same job, measured the same way
Subnet Calculator MCP
by zekerutledge

Calculates IPv4 subnet information from an IP address and CIDR prefix or dotted decimal subnet mask

1 tools answering
MCP Ip2whois
by ip2whois

WHOIS domain MCP server that query the WHOIS information using IP2WHOIS API.

55 installs/wk local only
DomScan
by estevecastells

Domain intelligence for DNS, WHOIS/RDAP, TLS, reputation, valuation, and brand protection.

answering
O
Prefix WhoIs
by pwhois

Live BGP routing table and registry lookups: IP origin, ASN prefixes, transit, org search.

answering
IP Calc MCP
by ryudi84

IP address and subnet calculator, CIDR notation

52 installs/wk local only
Domain Check
by saidutt46

Fast domain availability checker with RDAP/WHOIS — batch checks, TLD presets, and name generation.

local only
Domainintel MCP
by bishop81

Domain intelligence for agents: WHOIS, DNS, SSL/TLS, security headers, reputation, subdomains.

47 installs/wk local only
Database Admin
by cybeleri

Database admin MCP: schema inspection, query optimization for PostgreSQL and MySQL

26 installs/wk local only

WHOIS — questions

Answers built from our own checks of this server.

What can WHOIS do?
It exposes 2 tools, read directly from the server on our last check. Among them: whois_batch_lookup, whois_lookup. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
Is WHOIS working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 4619 ms. The bar chart above shows every period we have measured.
How do I connect WHOIS?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does WHOIS need an API key?
No. WHOIS completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 2 of them are readable on this page. This is what we observed, not what the docs claim.
Is WHOIS open source?
Yes — it is published under the MIT licence, written in Go and 64 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.